voice and data telecommunications systems, namely automatic call distributors, software for processing telephone calls and data telecommunications, software for providing operating systems for enhanced telecommunications services, software for a private branch exchange, software for providing electronic key system features, software for providing enhanced centrex services, and software for providing enhanced signalling system No. 7 services

telecommunications services, namely distributing telephone calls, processing telephone calls, data communications, electronic key system services, signalling system No. 7 services, private branch exchange services, centrex services